No need for silence? Hardly

Rico says he's been watching Kampen om tungtvannet, aka The Heavy Water War, about the destruction (after several attempts) of the deuterium the Germans needed to build an atomic bomb.
During several tense moments, where silence would have served them well, the saboteurs all carried Thompsons (some white-washed, in the snow scenes), and 1911s, but not a single one with a suppressor... Since the SOE had plenty of them, he fails to understand their absence.